Bung for liquid containers



Nov.20,1923. L475J42 W. REGSEGGER BUNG FOR LIQUID CONTAINERS Filed MarchE, 1923 Patented Nov. Zt?, "1923.,

inane savant craie.

WALTER REGSEGGER, OF VVLQLTZINGEN', SWITZERLAND.

SUNG FOR LIQUID CONTAINERS.

Application filed March 5,

' purposes have already been proposed, in

which the air before entering the barrel is subjected to a twofoldpurification, but cannot be used on account of their projecting partswhere kthe barrels are intended for transport, so that other bungs mustbe used for this purpose. On the other hand bungs suitable for transportpurposes are known. These bungs, however', have the drawback, that theyare not constructed so as thoroughly to purify the air as it enters.

rlhe subject of the present invention is bung fora barrel, which issuitable for transport purposes and enables the air as it enters to betwice purified.

This object is effected according to the present invention by combiningwith 'perforated disc, which is capable of being screwed into the bungsleeve, a cotton wool container, which is provided with packing aroundits periphery, and by a flange of this container dipping into a liquidcontainer, the communication between which and the cotton wool containerand the barrel is capable of being interrupted by screwing down thedisc, the liquid container being at the same time pressed on to thepacking which makes a tight joint with the barrel.

In the accompanying drawing a constructional example of the subject ofthe invention is shown in vert-ical section.

A sleeve 1 with an outwardlyturned top flange 2 and an inwardly turnedbottom flange 3 is provided with an outside thread 4t for the purpose ofbeingdriven into' the bung hole of a barrel and a shortl internal thread5, into which a disc 7 provided with perforations 6 is screwed.Throughpan axial hole 8 in the disc? the hollow stem 9 of a shoulderedcup 10 extends. rEhe shoulc er 1()1 of this cup is adapted to be pressedon to a packing ring 11 with the object of making a tight joint betweenthe bung and the interior of the barrel. By a nut 13 screwed on the topof the stem 9 the latter 9 is forced p to take part in the axial upwardmovement 1923. Serial No. 622,930.

of the threaded disc 7. In the hollow stem Qian excess pressure valve1st is provider, which under the pressure ofa spring 15 closes anopening 16 4in the bottoni of the cup 10, while, on there being aneXcesspressure in the barrel, it allows the gases to escape. The upperend of the spring 15 abuts against a plug 17. screwed into the stem 9and having a central bore 18. Y

The bung has no parts, which project beyond the barrel, and is thereforespecially Vsuitable for barrles for transport purposes.

The shouldered cup 10 forms a container for the filtering liquid 19, forinstance alcohol. In this liquid a rim 20 is immersed, which extendsfrom a cotton wool container 21 integral with the threaded disc 7 almostto the bottom of the cup 10. fn a peripheral groove 22 of thecylindrical cotton wool container 21, there is a packing ring 23, whichrests against the inside of the wall of the sleeve 1.

lVith the parts in the position shown, the shoulder 101 of the cup 10 isslightly raised from the packing ring 11 and the air can pass throughthe cotton wool container 21 and the liquid 19 into the barrel, thusbeing subjected to a twofold filtration. When the barrel is to betransported, the disc 7 and the cotton wool container 21 are slightlyscrewed down, when the lower surface of the cotton wool container 21will press on a packino' ring 24s lying cn a flange 25 of the Vcup stein9, the cup 10 thus pressing on the packing ring 11 and pressing thelatter on to the flange 3 of the sleeve.Y This tifrhtly seals the spacecontaining the liquid 19, so that the latter cannot escape from Vthesaid space.

l-.That I kclaim is 1. A bung for barrels for transport pur poses,comprising a perforated disc capable of being screwed into the bungsleeve, a cotton wool container combined with the 'said disc and havinga peripheral packing and a vdowiriwardly projecting rim, a liquidcontainer having a central stem, a face capable of being tightly pressedupon an annular flange of the bung sleeve and a central stem having aflange upon which the bottom of the cotton wool container is capable ofbeing tightly pressed, the said rim of the cotton weol'container dippingin the liquid container and the said stem being in lifting connection tothe perforated disc.

2. A. bung for barrels for transport pury poses, comprising a perforateddisc kCapable of being screwed into the bung sleeve, a cotton woolcontainer combined with the said dise and having a peripheral packing.and a downwardly projecting rim, a ouplike, centrally bored liquidcontainer having a central hollow stem enclosing a spring, ay plug andan excess pressure valve, an annular shoulder capable of being tightlypressed upon an annular iange of the bung sleeve,

the said stein having a ange upon which

